This document discusses primary health care as outlined in the Declaration of Alma-Ata in 1978. It defines primary health care as essential care that is universally accessible, affordable, and participatory. The key principles of primary health care are equitable distribution of resources, community participation, intersectoral coordination between different sectors like education and sanitation, and use of appropriate technology. The document outlines the components and goals of primary health care in achieving "Health for All" through primary, secondary and tertiary levels of care.